Power-drill device.



C. L. STUEBER.

POWER DRILL DEVICE.

APPLICATION FILED mac. 23, 1914.

Patented Apr. 25, 1916.

3 SHEETS-SHEET l- THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. c.

C. L. STUEBER.

POWER DRILL DEVICE.

APPLICATION FILED DEC. 23. 1914.

Patented Apr. 25, 1916.

3 SHEETSSHEET 2.

attain wag THE COLUMBIA PLANOGRAPH 520, WASHINGTON, D. c.

C. L. STUEBER.

POWER DRILL DEVICE.

APPLICATION FILED DEC. 23 1914.

3 SHEETS-SHEET 3.

THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. c.

rut.

CONRAD LEO STUE BEB, OF ALCBIA, IOWA.

POWER-DRILL DEVICE.

Application filed December 23, 1914..

To all whom it may concern.

Be it known that I, CONRAD LEO STUEBER, a citizen of the United States, residing at Albia, in the county of Monroe and State of Iowa, have invented a new and useful Power-Drill Device.

This invention relates to power drill devices particularly adapted and intended for drilling one or more holes in railway rails.

An object of the device is to provide a machine which can be easily transported along the rails to desired position, being for that purpose mounted on a truck having wheels which travel on the rails, and also having at one side thereof, wheels which will permit the machine to be quickly and easily removed from the track, as when a train is about to pass.

A further object of the invention is to provide improved means for varying or adjusting the position of the drills according to the desired position of the holes to be made, and this without disconnecting the drills from a gas engine or other power device.

A further object of'the invention is to provide improved means for holding and feeding the drills to the work.

A further object of the invention is to provide improved means for swinging or shifting the drills into and out of action, conveniently by the use of levers operable by one man.

A further object of the invention is to provide an improved suspension of the drills from the truck, to permit the action referred to.

Other advantages will be apparent from the following description and the accompa nying drawings.

In the drawings, Figure 1 is a side elevation of the machine. Fig. 2 is a plan thereof. Fig. 3 is a detailed side elevation showing the drills retracted from the work. Figs. 4., 5, and 6 are details, in section and side elevation, illustrating the operation of the devices for holding the drills to the work. Fig. 7 is an enlarged detail, partly in section, of the drills and their driving gears and casings. Figs. 8 and 9 are details of a lifting device for disengaging the work holding means.

Referring specifically to the drawings, Figs. 1 and 2 particularly, show a truck having cross bars 6 mounted on sills or end bars 7 in which are journaled the wheels 8 Specification of Letters Patent.

Patented Apr. 25, 1916.

Serial No. 878,636.

which travel on the tracks 9. Mounted upon this truck, preferably near one side thereof, is a gasolene or other engine indicated as a whole at 10. This may be of any suitable or desired construction. The cross bars 6 of the truck are extended on the side ad acent the engine, and are there provided with a pair of groundwheels 11, on which the truck can be transported on the ground, as by lifting the opposite side of the truck. These wheels 11 are so constructed as to be out of contact with the ground when the truck is on the rails, but by lifting the opposite side of the truck said wheels will be lowered to the ground, and the truck may then be run off to the side of the railway, or otherwise transported as desired.

The crank shaft of the engine is connected by a suitable sprocket and chain 12 to a gear wheel 1.3 mounted on a short shaft 14 on the truck, and this shaft has a sprocket 15 connected by a chain belt 16 to a sprocket 17 on the shaft 18 which is located and extends lengthwise below or under the truck and is the main drive shaft of the drills. This shaft can be shifted in the sprocket, lengthwise, by any suitable means, as by a feather engaging in a longitudinal keyway 19 which extends the whole length of the shaft 18.

The drills are arranged in pairs, each pair consisting of a housing 20 through which the shaft 18 extends in bearings, and in the rear part or body of each housing said shaft is provided with bevel gears 21, splined to the keyway 19, and these bevel gears mesh with gears 22 on the drill spindles 23 which extend through hollow necks 24 connecting the heads or front ends 25 of the-housing to the body thereof. The housings are rigidly connected to each other by spacing rods or tubes 26 and 27, which extend parallel to each other, and to the shaft 18, between the housings. These rods pass through sleeves 28 on the housings, and are fastened by said set screws 29, permitting the housings to be shifted toward or from each other according to the desired position of the drills, the shaft 18 sliding in the gears 21 accordingly.

The drill housings are hung from the truck by means of four swinging links 30 and 31, which are adjustable in length by means of turn-buckles 32, the links having eyes at their lower ends through which the rod 26 and the shaft 18 extend loosely, the

parts being positioned by adjustable collars 33 beside the eyes. The upper pivot of the rear links 31 is concentric with the shaft 14, to preserve the tension of the belt 16. This arrangement permits lateral swing of the drill housings to advance or retract the drills with respect to the work, and the turn-buckles32 permit'the drills to be adjusted to the proper vertical position with respect to the web of the rail being drilled.

'For swinging the housings to and from the work I provide a hand lever 34 which is fixed to a square bar provided with journails 36 which turn in 'boxings 37 cast on the housings 20. Said bar 35also carries crank arms 38, and the bar is slidable lengthwise in. the journals and in the crank arms according to the adjustment of the housings. Each arm 38 is connected to a rod 39 provided with a hook 40 at its outer end adaptedto engage the outer side or edge of the head of the rail. A foot lever 41 is fulcrumed on a squared bar 42 rotatably carried in the arms 38 in journals 42 and this bar 42 carries crank arms 42 pivotally connected to the rods 43 each of which has a shoulder 44 adapted to engage the opposite side of the head of the rail. This provides clamps adapted to engage the head of the rail, the members thereof being operated jointly by the hand lever 34 and the foot lever 41. A cam casting 44 is fixed to each rod 39, as by set screw 45, and has a guide opening 46 for the rod 43. This cam block or casting is so arranged that its inclined lower edge 47 will ride across the upper edge of a web 48 formed at the front endof the heads 25 of each drill housing,

and, in addition to operating the clamps,

the lever 42 acts to swing the drills toward and from the work.

To set the drills to work, as indicated in Figs. 4 and 5, the levers 34 and 41 are l pressed down. The first result of this is to draw the rods 39 inwardly and force the rods 43 outwardly until the jaws 40 and 44 engage the head of the rail, the earns 47 riding down onthe webs 48, and when the rail head is clamped, further movement downwardly of the lever 34 causes saidlever and the arms 42* to pivoton the bar 42 as a fulcrl'im, thereby swinging or shifting the housing and the drills toward the work, by a sort of toggle action, and feeding the drills. into the work as the drilling progresses, the bar 42 being held in relatively fixed position by the foot lever 41 pressed against the ground and the clamp rod 43 pressed against the rail.

To. withdraw the drills and disengage the clamps, as shown in Fig. 6. the lever 34 is lifted, and, turning on the bar 42 as a fulcrum, the housings are swung back and the drills withdrawn from the work, and then by continuing the lift of the lever 34, and

lifting the lever 41, the former advances the rods and the latter retracts the rods 43 to open the clamps. As the rods 39 advance, the cam surfaces 47 ride up the webs 48 and lift the clamps free from the rail. It is obvious that both clamps are thus operated, by means of the connections aliorded by the bars and 42. These bars are adjustable lengthwise in their journals, and also in the arms 42, so that the clamps and their operating devices can be positioned along the rods according to theposition of the drills.

The drills are driven by means of the engine and the shaft 18, through the bevel gearing as described above, the engine being thrown in or out of gear by known devices.

,To support the drill housings in raised or retracted position I provide a latch bar 50 pivoted at 51 on the truck and having a notch 52 to engage, by gravity, the shaft 18 when the housings are swung up,-as illustrated in Fig. 3. This is convenient for transportation. \dhen the drills are to be used the latch is disengaged and the drills swing down to operative position.

As drills of different kinds are made, or as they become of different lengths by reason of wear or sharpening, to permit the use of drills of various lengths at the same time, each spindle is provided at its front end with an adjust-able chuck 6O fitted with set screws 61 to hold the drills 62, and the ends of the spindle is tapped to receive a thrust screw (33, which can be moved to any position according to the length of the drill, so as to make all the drills enter the rail at the same time. Furthermore, in order to detect dull drills, each drill spindle is provided with an indicator comprising an index arm pivoted at 71 on the housing head, and having a finger 72 which is engaged by a stud 73 projecting through a slot in the casing. This stud projects from a thrust collar 74 which is loose on the spindle behind ball bearing 75, and is pressed behind by a spring 76. The spindle 23 is connected to the gear 22 by a feather 77 in a keyway 78, so that some 1011- gitudinal movement of the spindle is permitted with respect to the gear. .Vhcn the pressure on any drill becomes abnormal, the spring 76 is compressed, causing the index 70 to. lift, thereby indicating said condition to the operator. A thrust shoulder 80, on each drill spindle, transmits the pressure through the bearing to the spring.

It will be noted that the whole machine is capable of operation by one man, the gang of drills being under his control by the levers referred to. Four drills are shown. to drill four holes simultaneously, but this number may be varied.

Breaking of. drills is also entirely eliminated by the fact that the vibrations of the engine run parallel with the axes of the drills, or crosswise of the truck, and when the drills are operating each pair is clamped to the rail adjacent the places being drilled, and consequently there is no side motion or vibration. The hand lever 34:, by which the feed of the drills is controlled, enables the operator to readily detect dull drills or extra hard metal, and thus feed the drills in accordance therewith.

Since the main weight of the machine is adjacent the transporting wheels 11, it is possible for one man to lift the other end of the machine and roll the truck and the whole machine off of the right-ofway. The clamps by which the machine is connected to the rails automatically accommodate themselves to rails of any size, without affecting the ability of the operator to shift the drills toward or from the work, all of the clamping and feeding movements being performed by levers capable of simultaneous manipulation by one man.

IVhat I claim is:

1. In a track drilling machine, the combination of a truck, a drill frame swingingly hung from the truck, a clamping device carried by said frame and engageable with a rail of the track, and means connected to said clamping device and to the frame, to swing the latter, and thereby advance or re tract the drill.

2. In a track drilling machine, the combination of a truck, a drill frame swingingly hung from said truck, a clamp engageable with a rail of the track, and a lever operatively connected to said clamp and frame and constructed to operate the clamp and swing the frame.

8. In a track drilling machine, the combination of a truck, a drill frame swingingly hung from said truck, a clamp having two members adapted to engage a rail of the track, a lever operatively connected to one of said members and to the frame and adapted to operate the former and swing the latter, and another lever operatively connected to the other clamp member.

4. In a track drilling machine, the combination of a truck, a multiple drill frame carried by the truck and movable bodily toward or from one of the rails of the track, and means to move said frame to advance or retract the drills, said means including a clamp engageable with said rail.

5. In a track drilling machine, the combination of a truck, a drill frame carried thereby and movable toward or from one of the track rails, a clamp connected to said frame and comprising two members, a lever operatively connected to one clamp member and to the frame, to operate the former and move the latter, and another lever operatively connected to the other clamp member.

6. In a track drilling machine, the combination. of a truck, a plurality of drill housings with drill spindles therein, supported by the truck side by side in horizontal position thereunder, a shaft extending ho1'i zontally through said housings, gearing between the shaft and the spindles, and means carried by the truck to drive said shaft, the housings and gearing being adjustable along the shaft, to vary the relative positions of the drills.

7. In a track drilling machine, the combination of a truck, a pair of drill housings suspended side by side under the truck, one or more spacing bars adjustably connecting the housings, a drive shaft extending into and between the housings and geared to the drills, the housings being adjustable along the shaft, and means to drive said shaft.

8. In a track drilling machine, the combination of a truck, a plurality of drill housings swingingly suspended in parallel relation under and from the truck, a shaft extending into the housings and geared to the drills, a clamp beside each housing adapted to engage the rail being drilled, a bar pivot ally mounted on the housings and operatively connected to the clamps, a lever carried by the bar and adapted to operate the clamps and swing the housings, and means to drive the drills.

9. In a track drilling machine, the combi nation of a truck, a plurality of drill housings swingingly suspended in parallel relation under and from the truck, a shaft extending into the housings and geared to the drills, a clamp beside each housing adapted to engage the rail being drilled, a bar pivotally mounted on the housings and operatively connected to the clamp, a lever carried by the bar and adapted to operate the clamps and swing the housings, and means to drive the drills, the housings and clamps being adjustable along the bar, to vary the relative position of the drills.

10. In a track drilling machine, the combination of a truck, a swinging drill housing suspended therefrom, a rail clamp comprising two members, a lever pivotally connected to the housing and to one of said members, to swing the housing and advance or retract said member, a second lever pivoted to the said lever and connected to the other clamp member to advance or retract said member, and means to drive the drill.

11. In a track drilling machine, the combination of a truck; a plurality of swinging drill housings suspended in parallel relation from said truck, a drive shaft extending be tween and into the housings and geared to the drills, a plurality of rail clamps corresponding in number and position to said housings, each clamp comprising two members, a bar jo-urnaled on the housings and provided with cranks connected to one member of each clamp, another bar journaled on each of said cranks having a crank connected to the other member of each clamp, a lever attached to each bar, to turn the same, and means to drive said shaft.

12. In a track drilling machine, the combination of a truck, a plurality'of swinging drill housings suspended in parallel relation from said truck, a drive shaft extending between and into the housings and geared to the drills, a plurality of rail clamps corresponding in number and position to said housings, each clamp comprising two members, a bar journaled on the housings, and provided with cranks connected to one member of each clamp, another bar journaled on each of said cranks having a crank connected to the other member of each clamp, a lever attached to each bar, to turn the same, and means to drive said shaft, said housings being adjustable along the shaft, and said cranks and clamps being adjustable along the bars, to vary the relative position of the several housings and clamps.

13. In a track drilling machine, the combination of a truck, a drill and its housing carried thereby in position to drill one of the rails of the track, a clamp engageable with said rail and including a shifting rod provided With a cam engageable with the housing, and a lever pivoted on the housing and connected to said rod to shift the same, the

Copies of this patent ma be obtained for cam acting to raise or lower the clamp with respect to the rail as the rod is shifted.

1a. In a track drilling machine, the combination of a truck, a drill and its housing carried by the truck in position to apply the drill to one of the track rails, a clamp engageable with said rail, a lever pivoted to the housing and connected to said clamp to operate the same and move the housing, and means to automatically raise or lower the clamp with respect to the rail. as said clamp is disengaged or engaged respectively.

15. In a drilling machine, the combination of a drill housing, a spring pressed drill spindle therein, an indicator arm pivoted on the housing, and a projection on the drill spindle engaging the arm to swing the same, according to pressure on the spindle.

16. In a track drilling machine, the combination of a truck having wheels to run on the track, and also having wheels at one side thereof to run on the ground, a drill swing ingl v hung under the truck, to swing up or down, and means on the truck to support the drill in raised position to permit the truck to be transported on said ground wheels.

CONRAD LEO STUEBER.

lVitnesses Jon ANKNER, Flinn ADAMS.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

